Machine for bending gas-pipe



(No Model.) J. 0. SPRING.

H MACHINE FOB. BHNDING GAS PIPE, 48w. No .269,131. Patented Dec. 12,1882.

fittest N. PETERS. PhMo-Lithngruphaf. Wnhlngnll. D. (1

' To all whom it may concern:

UNITED STATES PAT NT OFFICE.

JOSIAH 0. SPRING, OF ST. LOUIS, MISSOURI.

MACHINE FOR BENDING GAS-PIPE, 800.

SPECIFICATION forming part of Letters Patent No. 269,131, dated December12, 1882, Application filed February 28, 1882. (No model.)

Be it known that I, JOSIAH 0. SPRING, of the city of St. Louis, in theState of Missouri, have invented a certain new and useful ImprovementinPipe-Bending Machines, of which the following is afull, clear, and exactdescription, reference being bad to the accompanying drawings, formingpart of this specification.

My invention relates to a machinefor bending gas-pipe, &c.; and itconsists in the construction of the frame for supporting the threehending-rollers,in combination with the rollers themselves and theirarrangement, as hereinafter set forth.

In the drawings,Figure 1 is aside elevation. Fig. 2 is an end view. Fig.3 is a detail section of two of the rollers.

A represents the frame, supporting in suitable boxes, b o, shafts B andO. The shaft B .carries a driving-pulley, D, and loose pulley D, andalso a pinion, E, which engages with and drives a cog-wheel, F, on theshaft 0. On oneend of the shaft (3 is rigidly secured a groovedrollerfGr, above which are supported smaller but similarly-groovedrollers H and I on arbors h and z. The rollers H and I are loose upontheir arbors and are held thereon by pins h t". The arbor h is supportedona projectioma, of theframe, and that, i, on a slid ing block, J,working in an opening of a projection, a, of the frame. Thus the roller1 can be adjusted relative to rollersGa-ndl H, to give more or less bendto the pipe.

I adjust the roller I by a screw-rod, K, supported and turning in thetop of the projection a and passing down through a screw-threaded holein the block The rod has a handwvheel. L, on its upper end, by which itis turned to adjust the roller. The direction in which the rollers turnis shown by arrows in full lines, and the direction in which the pipe ispassed through the machine is shown by a dotted ar- IOVV.

Itiwill be seen that the rollers can be easily removed and others withlarger or smaller grooves be substituted, so that a pipe of any size canbe bentwithout being mashed or split.

I claim as my invention- The frame A, having projections a a, shafts BG, pulley D, pinion E, wheel F, grooved rollers Gr HI, arbors'h i,adjustable block J, screw-rod K, and hand-wheel L, all arrangedsubstantially as and for the purpose set forth.

JOSIAH 0. SPRING.

In presence of- GEO. H. KNIGHT, AUGUSTE WEBER.

